Malicious PDF — malware analysis report

Static analysis result for SHA-256 20648f6c08197a65…

MALICIOUS

PDF

35.4 KB Authoring application: Smallpdf Desktop
MD5: 8aa863ab2aa57d65df9de93c11e4ad0a SHA-1: bdae60d7e65e3cf6d01275c6bc9f28a299ce3a81 SHA-256: 20648f6c08197a659d693e902d8a84a2a59dd6af57a88fcc65baa45a95bd3eee
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains, suggesting a link farm for SEO or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'SE_INVOICE_LURE' heuristic further indicate a phishing or malicious traffic redirection attempt. The document body, though heavily corrupted, contains fragments related to accounting resumes, which could be part of a lure.

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://furbabysittingplymouth.com/uploads/1/3/0/7/130740625/7838819.pdf
    • http://twomargaritas.com/uploads/1/3/0/6/130621709/goseroboliwufeti.pdf
    • http://mikemcman.com/uploads/1/3/0/7/130775572/gokonaga.pdf
    • http://tierisch-tragbar.de/uploads/1/3/0/6/130620632/b189c6933.pdf
    • http://89cougars30th.com/uploads/1/3/0/6/130639147/b1f3688841d.pdf
    • http://myworshipmentor.com/uploads/1/3/0/4/130476024/rizuzowelorura.pdf
    • http://advokat-moscow24.site/uploads/1/3/0/6/130621719/4615441.pdf
    • http://retrogameshownight.com/uploads/1/3/0/7/130775506/pokagorek-xupirovimivob-kusilowajabe.pdf
    • http://www.cbdoilng.com/uploads/1/3/0/6/130620975/nuvesimod-zusef.pdf
    • http://doorandwindowplus.com/uploads/1/3/0/4/130483895/ruxusube.pdf
    • http://drpatty.net/uploads/1/3/0/5/130589381/9863f7e6.pdf
    • http://garlandcrew.com/uploads/1/3/0/2/130289645/1586599.pdf
    • http://gramadounlimited.com/uploads/1/3/0/2/130291596/jugisovalotesalum.pdf
    • http://encore00028.voyagerwebsites.com/uploads/1/3/0/4/130483759/130483759.html#accounting+manager+resume+example
    • http://advokat-moscow24.site/uploads/1/3/0/6/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d3.bin
f9392b2a335607a7b21b1ff3381de5b4018a4e47a801be4a5dcf356bbc489eaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30D3 8076 bytes

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